A man who authorities say robbed a Night Dreams store in Rockville last week has been charged with six additional armed robberies of businesses in Montgomery County, police said Wednesday.

Montgomery County police said that Ramon M. Gunn was connected to the six other robberies after surveillance video of the Feb. 18 robbery of the Night Dreams store led to his arrest.

Gunn has acknowledged comitting the seven robberies in Germatown, Gaithersburg and Rockville, according to a county police news release.

Gunn is facing 20 criminal charges that will include seven robbery counts and one sexual assault count for inappropriately touching a female employee during a Jan. 30 robbery of Salon G. in Gaithersburg.

In addition to Night Dreams, Gunn also robbed three Subway stores, O’Hair Salon and Spa and a Domino’s Pizza, all in Montgomery County, police said.

Gunn is being held on $10,000 bond.